>> www.slhondaparts.com should have a diagram of your sensor's location.
>
> If you can figure out how they list the outside temperature sensor. The
> bumper diagram doesn't show the part or its location, and about 20 mintes
> paging through the various parts lists doesn't find me where it's
> categorized.
Found it. It's categorized under "Body/Air Conditioning->A/C Sensor" and
located smack-dab center in the bumper, but not really visible unless you
look under the car from the ground.
Which also answers the other question, yes, it does affect Auto A/C
operation as its used for external temperature feedback.
A quickie flashlight inspection didn't see any obvious crud on it, but I
plan on yanking it in better light and inspecting it. It's a $20 part, so
replacement isn't a big deal.